Origin of the name DENZIL.
Etymology of the
name DENZIL.
Meaning of the baby name DENZIL.

DENZIL.
From the Cornish surname Denzell, which is probably from Spanish doncel
(see note below), a diminutive of don ("gentleman;
nobleman"), denoting a "noble youth," or
"page." Jago
is another Spanish name used in Cornwall. Usage: America,
Canada, Great Britain.
Denzil Tulser, a character in the BBC sitcom Only Fools
and Horses. Denzil DaCosta (d. 1965), was an American jazz composer
and percussionist. (Wiki)

... The diminutive of don was
in Italian, donzel; in Spanish, doncel; in French, damoiseau,
a name applied to noble youths in a state of pagedom, and under the
control of the officer called in Spain, alcayde de los donceles;
in France, maître des damoiseaux. These young
gentlemen soon contrived to shake off their title, which chiefly
survives in the surnames Donzelli, Donizetti, Donzelle, Denzil; but
their sisters have been more patient of it, and are still English
damsels, French demoiselles, and Italian damigelle; the pretty old donzelle
having become obsolete, while signorina is the title in actual use... (History of Christian Names,
Yonge, 1884)